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Glee on Fox on YouTube

Will(Matthew Morrison) just found out that his best friend Finn (Cory Monteith) locked lips with his fiance, and he's not happy about it at all! In Glee Season 4, Episode 16: “Feud,” the two will be in an all-out war... and they're using the music of the 90s two most popular boy bands to do it! Will leads his group of the New Direction boys in a rendition of 'N Sync's "Bye Bye Bye" — marionette strings and all — while Finn and his group take on the Backstreet Boys classic "I Want It That Way." Here's your first look at all the drama to come.